package com.practice.communication.netty.demo;

import java.text.SimpleDateFormat;
import java.util.Date;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

public class TimeServerHandler extends ChannelInboundHandlerAdapter {

	@Override
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
		ctx.close();
	}

	@Override
	public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
		ByteBuf buffer = (ByteBuf) msg;
		byte[] req = new byte[buffer.readableBytes()];
		buffer.readBytes(req);
		
		String body = new String(req, "UTF-8");
		System.out.println("The time server receive order : " + body);
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
		String currentTime = "";
		if ("QUERY TIME ORDER".equals(body)) {
			currentTime = format.format(new Date());
		} else {
			currentTime = "BAD ORDER";
		}
		
		ByteBuf res = Unpooled.copiedBuffer(currentTime.getBytes());
		ctx.write(res);
	}

	@Override
	public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
		ctx.flush();
	}
	
	
	
}
